Chu Hsi, or Yuan-hui(元晦) and Chung-hui(仲晦), was born in Wu Yuan in the Song Dynasty. Being an extremely smart person, he took a government position at the age of twenty. He was once falsely accused by Shen Chi-tsu, an inspection official, and lost his position. At the age of 70, he resigned to live in Chung An, then moved to Chien Yang. His theory of academic research was to trace everything to its root seriously. His commentary on the Confucian classics was considered a standard exposition by the new Confucians of the Sung Dynasty. During the reign of Kan Hsi of the Qing Dynasty, Chu Hsi was honored as the twelfth wise man for his annotations on the Four Classics.

Reference:《THE BRIEF BIOGRAPHIES OF THE SAINTS AND SAGES ARE IN THE TA CHENG HALL OF THE CONFUCIUS TEMPLE》published by Taipei Confucius Temple Governing Board